r12 system

[jpsmith1cm]

134a with cap tubes.... thanks for that little gem whoever thought up that combination.... grumble grumble

quichergrumblin

You're working, aren't you?

[matt1124]

Yep, and so is that fridge

[Phase8]

Is there anything that can clear that wax?

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[jpsmith1cm]

Is there anything that can clear that wax?

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From a cap tube?

Nope.

[ICanHas]

From a cap tube?

Nope.

There's a tool that you attach to a cap tube and push it out with thousands of psi with oil or solvent. It's pressurized with a screw down oil pump or hand driven hydraulic pump.

It was in the same refrigeration and HVAC book that talked about cutting open a hermetic compressor for repair.

[VTP99]

There's a tool that you attach to a cap tube and push it out with thousands of psi with oil or solvent. It's pressurized with a screw down oil pump or hand driven hydraulic pump.

It was in the same refrigeration and HVAC book that talked about cutting open a hermetic compressor for repair.

Yep and it's called CAP-CHECK m#1003 by Thermal Engineering
Also check out the CAP-CHECK CHASER KIT m#1101

[Phase8]

Thank you.

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[2sac]

There's a tool that you attach to a cap tube and push it out with thousands of psi with oil or solvent. It's pressurized with a screw down oil pump or hand driven hydraulic pump.

It was in the same refrigeration and HVAC book that talked about cutting open a hermetic compressor for repair.

Or...wait for it...just change the cap tube.

[Phase8]

Or...wait for it...just change the cap tube.

Easy to say, but when there is no space to move around in and the cap tube is brazed to the suction line from beginning to end having more options is always nice.

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[cy]

R-401A runs a little lower head/hot gas temp so I like it a little better than R-409A. Both work fine though. No need to change TXV. I use 100% alkylbenzene oil. MP39 is claimed to work just fine with mineral oil (IIRC).

have used R409A and R401A without changing TXV. both work fine

[ECtofix]

Changing the cap tube is still the best option since you're assured of "fresh from the factory" passage of refrigerant. If they brazed the cap tube to the suction line as a heat exchanger, duplicate it by making a new line set. The cap tube doesn't need to be brazed to the suction line. Soldering the lines together will serve the same purpose, requires less heat and far easier to apply.

[jpsmith1cm]

Easy to say, but when there is no space to move around in and the cap tube is brazed to the suction line from beginning to end having more options is always nice.

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By the time you're done fiddling around with that cap tube cleaner widget, I've got 2 of them done and I'm off on a third call.

[VTP99]

By the time you're done fiddling around with that cap tube cleaner widget, I've got 2 of them done and I'm off on a third call.

Yeah that widget does look like a glorified bottle jack for a lot more money